水文响应单元法在盐渍化风险评价中的应用

水文响应单元法在盐渍化风险评价中的应用

章光新¹，邓伟¹，何岩²，RAMSIS Salama³

1.中国科学院东北地理与农业生态研究所，吉林长春 130012；2．中国科学院，北京 100086；3. 澳大利亚CSIRO水土资源研究所，澳大利亚佩恩 WA6014

收稿日期:2004-07-02 修回日期:1900-01-01 出版日期:2005-05-26 发布日期:2005-05-26

An Application of Hydrological Response Units in Assessment of Soil Salinization Risks

ZHANG Guang-xin¹, DENG Wei¹, HE Yan², RAMSIS Salama³

1.Northeast Institute of Geography and Agricultural Ecology, CAS, Changchun 130012, China; 2. Chinese Academy of Sciences, Beijng 100086, China; 3. CSIRO Land and Water, Perth WA6014, Australia

Received:2004-07-02 Revised:1900-01-01 Online:2005-05-26 Published:2005-05-26

摘要/Abstract

摘要： 运用水文响应单元（HRUs）法评价洮儿河流域地下水环境空间变化对盐渍化风险等级的影响过程，利用反映地下水环境空间变化的3个重要参数:水文区权重（HZ）、水位埋深（DTW）和水位上升速率（RR），由其3个等级网格值算术相乘HRU = DTW*RR*HZ在GIS 平台上生成2001年水文响应单元图。结果表明：（1）洮儿河流域整体上盐渍化风险非常小，低风险区主要分布在水文区A、水文区B和水文区D中的安广镇、烧锅镇一带，主要原因是由于区域地下水位下降、水文区A水文及水文地质条件较好；（2）高风险区主要分布在莫莫格湿地、镇赉县境内和来福-叉干镇一带，主要是由于嫩江排泄通道受阻、地表水体的补给以及水田不合理的灌溉造成的。

关键词: 水文响应单元, 土壤盐渍化, 地下水环境空间, 水文区权重, 水位埋深, 水位上升速率, 洮儿河流域

Abstract: Based on three important parameters such as weight of hydrological zones (HZ), depth to water (DTW) and rate of rise(RR), a hydrological response units (HRU) map 2001 was created in the Tao’er River basin, Songnen plain, which can response sensitively to the spatial change of groundwater environment, and it is produced by the algebraic multiplication of the three classified grids: HRU = DTW*RR*HZ. The HRU mapping indicated that the risk degree is not high in the whole area, comparatively, the high risk zones are Momoge wetlands, Zhenlai county, Laifu and Chagan town, which attributed to the discharge alley of groundwater suffocated, the recharge of surface water body and irrational irrigation.

Key words: hydrological response units, soil salinization, groundwater environmental space, weight of hydrological zones, depth to water, rate of rise, Tao’er River basin

中图分类号:

P641.2

章光新，邓伟，何岩，RAMSIS Salama. 水文响应单元法在盐渍化风险评价中的应用[J]. J4, 2005, 35(03): 356-0360.

ZHANG Guang-xin, DENG Wei, HE Yan, RAMSIS Salama. An Application of Hydrological Response Units in Assessment of Soil Salinization Risks[J]. J4, 2005, 35(03): 356-0360.

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